69 



most valuable information on the subject from Messrs. L. llodway and T. Stephens, 

 of Hobart, and R. H. Cambage, of Sydney, and now believe that I am able to offer 

 a kev to the better understanding of what has hitherto been considered a very 

 difficult group of plants. 



A. E. Risdoni, Hook, f., var. elata, Bentham ; [E. racUafa, Hook, f., var. 4, 

 non Sieb.). 



I have a specimen of Gunn's No. 1,100, 184.2, "J. I). Hooker, Marlborough, 

 Tasmania, 17th October, 1840." 



B. This is the var. 4 of E. radiata, Hook. f. (non Sieb.). See Fl. Tas., I, 

 137, as follows : — 



13. Euccduplns radiata (8ieb., PL, Exsioe., p. 475) ; arbor mediocris, ramulis gracilibus saepe 

 pendulis, foliis anguste ellipticis lanceolatisve mediocribus vix nitidis-iierviis rectis faleatisve, pedunculis 

 subelongati.s multifloris, floribus pedicellatis, cal3'ce obconico v. clavato, operculo brevi, capsula pedicellata. 



Variat iiisiguiter 4. foliis niajoribuis lanecolatis nitidis, eapsulis ut in fomia 3. — Arbor 



mediocris, ad E. coriaceam tendens. (Gunn, 1,100, 1,110.) 



This is a tree which, e.g., on Mount Wellington, maybe nearly a White Gum, 

 with but a little ribbon at the butt. It is a variety of E. Bisdoni, Hook, f ., namely, 

 var. data, Bentham, (B. Fl. Ill, 203). In typical Risdoni the sucker leaves arc 

 more or less cordate ; but in the varieties they tend to become oblong, and even 

 nearly orbicular, and the leaves, as higher levels are reached, become more aromatic. 



My identification of Gunn's No, 1,100 appears to be the key to the qu 3stion, 

 and all the Gum-topped Stringybarks may be looked upon as more or less closely 

 related to this form. 



C. E. ohliqua, L'Herit., var. " Gum-topped Stringybark," Waterworks, Mount 

 Wellington, Tasmania. We have trees at an elevation of 1,100 feet, with the leaves, 

 capsules, &c., of E. ohliqua ; but bark smooth from the base. The character passes 

 in all forms from this to 7i'. regnuiis, which in turn passes into broad-leaved forms 

 of amy(jdalina. (L. llodway.) 



This form undoubtedly shows affinity to E. ohliqua. A second specimen 

 Mr. llodway labelled " The extreme form of E. ohliqua, that Mueller considered a 

 form of haemastoma.'" 



{a) "Stringy Gum," Iluon Road (L. Rod way). The suckers are glaucous and 

 lose their "opposite" character at an early stage. 



{h) Guildford Junction, Tasmania, "Something between E. amygdalhta and 

 E. ohliqua in bark ; glaucous, wood pale." (R. H. Cambage.) 



Another specimen of Mr. Cambage's, from tlie same district, is labelled, 

 " Bark something like E. amygdaUna for, perhaps, 20 feet, then gradually clear." 



